(2007). Biogas in change: 16th annual meeting of the German Biogas Association with big biogas exhibition and excursion ; January 31st to February 2nd 2007, Congress Center Leipzig. Fachverband Biogas e.V.
Chicago-Zitierstil (17. Ausg.)Biogas in Change: 16th Annual Meeting of the German Biogas Association with Big Biogas Exhibition and Excursion ; January 31st to February 2nd 2007, Congress Center Leipzig. Freising: Fachverband Biogas e.V, 2007.
MLA-Zitierstil (9. Ausg.)Biogas in Change: 16th Annual Meeting of the German Biogas Association with Big Biogas Exhibition and Excursion ; January 31st to February 2nd 2007, Congress Center Leipzig. Fachverband Biogas e.V, 2007.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.